- Voiced by: Ryu Manatsu
- Animal Motifs: Lions. His theme song has the verse "The eye of the lion is shining" and a lion's head is used to symbolize L77.
- Bare-Fisted Monk: The Ultraman equivalent of one, as Leo relies almost entirely on unarmed melee combat as opposed to flashier beam attacks used by most other Ultra heroes.
- Big Brother Instinct: So much that he was willing to fight the Ultra Brothers to defend Astra when the latter was accused of stealing the Ultra Key from the Land of Light (which turned out to be Alien Babalou in disguise).
- Diving Kick: His signature Finishing Move is the Leo Kick, created as a friendly nod towards Kamen Rider.
- Elemental Punch: Variant. Leo is able to encase his karate chops in fiery energy for some truly devastating attacks that usually end with a monster get a body part lopped off.
- Fighting with Chucks: When he does use weapons, it's usually this. He even once turned a pair of factory smokestacks into one to battle the murderous Alien Kettle.
- Hand Blast: While Leo is better known for his usage of his own bare hands, he does get a few minor ones later on in the series.
- Horned Humanoid: One of the few Ultramen with horns.
- Meaningful Name: Name after the constellation of Leo, the lion, in which L77 is located in.
- Panthera Awesome: As stated above, lions form his major motif.
- Spin Attack: Able to perform spinning kick attacks powerful enough to knock the heads of his opponents' bodies.
- Super Strength: Even by the standards of the Ultramen, Leo's physical power is unmatched, thanks to years of Training from Hell.
- Swiss Army Weapon: The Ultra Mantle, which he carries on his left arm in the form of a bracelet. A gift from Ultraman King originally used to defeat the alien wizard Pressure.
- Training from Hell: Put through all sorts of it to become the skilled martial artist he is today.
- Warrior Prince: He was a prince back on his homeworld.
- Voiced by: Ryu Manatsu (stock grunts), Chikara Osaka (Ultra Fight Victory onwards)
- Combination Attack: He and Leo often perform these, with the most notable being the Ultra Double Flasher, a beam of red lightning fired with Leo standing behind a kneeling Astra.
- Dark and Troubled Past : He barely survived the destruction of L77, and was captured and imprisoned by the Alien Magma, who tortured and enslaved him. It was only the intervention of Ultraman King that got him out of it, and only from King did he learn that his brother had survived.
- Deus ex Machina: His role in Ultraman Leo. He'd always appears suddenly during a battle to help Leo against whatever the monster was giving his older brother trouble, like Gallon and Litre, Alien Akumania, Alien Atlanta, and Hangler.
- Diving Kick: Has his own version of the Leo Kick called the Astra Kick.
- Hand Blast: He uses beam attacks a lot more than Leo does.
- Meaningful Name: His name is Latin for "star".
- The Quiet One: He never said anything in the entire series, only gaining his first speaking role some 40 years later.
- Sibling Team: While they only occasionally worked together in the series, later Ultra Series almoost always have Astra and Leo together, like in Ultra Fight Victory and Mega Monster Battle: Ultra Galaxy Legends.
- Slave Collar: Variant. He wears one around his left leg — the only external remnant of the time he spent as a slave of the Alien Magma.
- Twin Desynch: As a result of his time spent as a prisoner of the Alien Magma, Astra has become fairly different from Leo. Notably, Astra used to have horns, but they were sawed off by the Alien Magma.
- Badass Beard: One of the few Ultras to sport facial hair.
- Badass Cape: His Ultra Mantle, which can transform into anything he wishes and can even deflect attacks. He gave it to Leo for the series, but got it back afterwards.
- Big Good: of the entire Ultra Series, although since he's a hermit, the Father of Ultra tends to fill in the more active needs of the role.
- Deus ex Machina: His role in Ultraman Leo is to make sure the day can be saved whenever things seem totally hopeless. He does against Alien Pressure (when Leo is shrunken down by the wizard), Alien Babalou (revealing him to be disguised as Astra to end the conflict between the Leo Brothers and Ultra Brothers), and Alien Bunyo (when Bunyo and Commander Black chop Leo into pieces).
- Godzilla Threshold: He only gets involved in the Ultra warriors' battles if there is no other way for whatever crisis they are facing to be solved, such as the Land of Light about to collide with Earth while the Ultra and Leo Brothers are engaged in in-fighting or Ultraman Belial successfully activating a weapon capable of destroying the universe.
- Hermit Guru: Usually lives as one, spending his time meditating and observing the Space Garrison from an isolated planet. In fact, no Ultra had ever seen King until Leo's battle against Alien Pressure forced him to make an appearance.
- I Have Many Names: He tells this to Ultraman Hikari in the Hikari Saga gaiden, saying that "Ultraman King" is simply what humans have given him.
- Mysterious Past: It's known that the Ultras developed their powers from the Plasma Spark, but Ultraman King was already an Ultra long before that and his origin is unknown. Only Ultraman Nexus is more ancient than him.
- Non-Indicative Name: Despite his given title of "king", Ultraman King isn't actually the ruler of the Land of Light. It just befits his incredible power.
- Non-Standard Character Design: He's the only good Ultra with red eyes.
- The Omnipotent: His powers are virtually infinite and he's regarded as all powerful, and more than backs up that claim. He's capable of effortlessly bring back a dismembered Leo to life and curbstomped the immensely powerful Ultraman Belial, then created the Land of Light's moon around him to seal him away. In Ultraman Geed, he recreates the freaking universe.
- Physical God: When a species of immensely strong, 50 meter tall energy beings considers you their deity, you have to be this.
- Time Abyss: He predates the Land of Light and is at LEAST 300,000 years old, probably older. To note, the Father of Ultra is considered old by his people's standards at 160,000.
- Played by: Ryu Manatsu
Captain Dan Moroboshi
- Played by: Kohji Moritsugu
See Ultraseven for tropes applying to Dan Moroboshi in general
- Played by: Tsunehiro Arai
- Played by: Yoshiko Tominaga
- Played by: Kaori Okano
- Played by: Yukio Itou
MAC (Monster Attacking Crew)
The series' attack team, which Gen is a member and Dan is the leader of. Unlike other Ultra series, the rest of the team is virtually nameless as members tend to get killed off quite regularly by the weekly invading aliens and rampaging kaiju.
- Played by: Masumi Harukawa
- First Appearance: The Death of Seven! Tokyo Sinks!
Alien Magma has appeared several more times in the Ultra Series, due to being one of Ultraman Leo's most popular and iconic enemies. The hairstyle, eye colour, and weaponry have also changed a number of times over the course of the franchise.
- Archenemy: To Ultraman Leo for destroying his homeworld at the start of the series.
- Breakout Villain: Ranks among Ultraman Leo's most iconic foes and has reappeared several times in the franchise against other Ultramen.
- Cat Folk: His species, as evidenced by the cat-like ears and leonine hair.
- Hand Blast: Can fire a variety of energy bolts from his hands, including a blue laser and finger bolts.
- Knight of Cerebus: Alien Magma shows off right from the start that Ultraman Leo is nothing like the wacky Ultraman Taro by defeating Ultraseven and successfully sinking an island-city with the help of the Gilas Brothers.
- Shapeshifter Weapon: His hands are able to transform at will into a lance-like sword called a Pata for combat. In later incarnations, he can also transform them into a hook.
- Villain Decay: In his reappearance. He's gone from sinking an island, flooding Tokyo, crippling Ultraseven, and destroying Leo's homeworld, to harassing children for their toy fans and trying to marry some bird alien.
- Villain: Exit, Stage Left: He runs away after the Gilas Brothers are killed and vanishes until Rolan's appearance, where he's finally offed for good.
- The Worf Effect: He and the Gilas Brothers defeat Ultraseven at the start of the series, showing exactly the direction of the series, as well as Magma's ruthlessness.
- First Appearance: The Death of Seven! Tokyo Sinks!
- Attack Reflector: Both brothers can lock hands together and spin themselves rapidly to reflect all attacks against them.
- Combination Attack: All the Gilas Brothers' powers are based around this, particularly their Spin Attack, which allows them to spam their laser bolts and create a powerful electrified force field. Gen had to train against these powers too.
- The Dividual: It's nigh impossible to treat them as separate monsters due to how closely tied with each other they are.
- The Dragon: Both of them are Alien Magma's loyal monster minions and do most of the dirty work for him.
- Everything's Better with Dinosaurs: They certainly resemble the part.
- Horn Attack: Both brothers can shoot lasers from their horns.
- Making a Splash: The Gilas Brothers can conjure tsunamis to flood cities and sink islands.
- Off with His Head!: The fates of both.
- Spell My Name with an "S": Also known as the Giras or Gillas Brothers.
- Spin Attack: Their Attack Reflector allows them to do this as well by firing energy beams as they spin about.
- Starter Villain: They were the first foes that Ultraman Leo had to train himself against.
- Tag Team Twins: They do all their combat and always use their powers together.
- Those Two Bad Guys: As Alien Magma's henchmen.
- Weather Manipulation: They can create torrential rainstorms and hurricanes.
- The Worf Effect: They break Ultraseven's leg, costing him his ability to transform and forcing him to remain as Dan Moroboshi for the remainder of the show.
- First Appearance: Farewell to Tears
- Blade Below the Shoulder: His weapon of choice is a pair of long swords built into his wrists, which Gen had to figure out how to overcome.
- Impaled with Extreme Prejudice: Leo kills him by tearing off his arms and stabbing him with their wrist blades.
- Kick the Dog: Murders Tooru and Kaoru's dad right in front of them. The two kids are adopted by another MAC officer, but then Tsuruk murders him as well.
- Master Swordsman: A murderous blademaster whose swiftness and brutality with his wrist blades were so great that Gen had to go through his usual Training from Hell in order to counter them.
- One-Winged Angel: Tsuruk transforms himself into a giant reptilian monster instead of merely increasing his size, which is how he battles Ultraman Leo. He maintains his lethal wrist blades in this form.
- First Appearance: Don't Cry! You're A Man!
- Battle Boomerang: Its "ability of the week" that Gen needed to train against and find a way to overcome. Its boomerang horn is also bladed for a good measure.
- Breath Weapon: Breathes fire.
- Everything's Better with Dinosaurs: Resembles one at the very least.
- Half the Man He Used to Be: After the monster gets impaled, Leo uses his Leo Kick to slice Kanedoras in half.
- Horn Attack: More specifically, Kanedoras uses its sword-like horn like a boomerang.
- Impaled with Extreme Prejudice: Leo stabs him in the face with his own horn before chopping him in two.
- First Appearance: Burn On! You're A Man!
- Impaled with Extreme Prejudice: His fate, as Ultraman Leo manages to rip off one of his shoulder spikes and stab him in the skull with it.
- One-Winged Angel: Like Tsuruk, Karly transforms himself into a giant reptilian monster rather than increasing his size. He uses this ability to battle Ultraman Leo, and still has his deadly shoulder spikes.
- Shock and Awe: Shoots lightning from his shoulder spikes and can electrocute enemies who try to grab them.
- Spikes of Doom: He relies on the two huge spikes on his shoulders to overwhelm his opponents. Naturally, Gen had to train himself to counter the weapons.
- First Appearance: A Beautiful Man's Disposition
- Battle Boomerang: The shuriken petals act as these, and Gen had to train against them.
- Foul Flower: Kendoros gains its shuriken petals from the alien flower growing on the top of its body, but it has to create the flower and let it grow in order to gain the ability.
- Hand Blast: Is able to fire bullet-like energy missiles from its fingertips.
- Helicritter: The flower on it top acts as a propeller for flight.
- Our Monsters Are Weird: Another of those upside-down monsters a la Twin Tail, except this time as a giant artichoke monster!
- Rolling Attack: Kendoros can retract its body parts into its bulb-like body to roll about and over enemies.
- First Appearance: Certain Kill! Monster Challenger!
- Achilles' Heel: Vekira's backside is so vulnerable to attack that it will die if hit from behind hard enough. However, the monster knows this and always ensures that its back is never facing the enemy, so Gen had to train in order to somehow hit the monster from behind.
- Breath Weapon: Can breath a shower of explosive sparks.
- Everything's Better with Dinosaurs: Resembles one, but its origins are never stated.
- First Appearance: The Bridge of Friendship that Spans the Universe
- Achilles' Heel: His antennae are not only the source of his most potent powers, but he will actually die if they're torn off.
- Aliens Among Us: Giro can't disguise himself as a human like many Ultra aliens, so he hides by blending in with the monster statues at an amusement park.
- Amusing Alien: He was merely a friendly and fun-loving alien who just came to Earth to make friends and travel as a tourist. Unfortunately, MAC's suspicion of potential alien invaders led to him fighting Ultraman Leo.
- Little Green Men: He strongly resembles one.
- Spell My Name with an "S": Sometimes spelled as Guiro.
- Sticky Situation: Giro's primary power (and that which Gen had to train against) is to spray a white foam from his antennae that solidifies upon contact with solid matter, slowing and hindering his enemies in sticky white foam.
- First Appearance: The Sorrowful, Wandering Monster
- Beware My Stinger Tail: Ron can shoot energy darts from his tail.
- Breath Weapon: Breathes fire.
- Came from the Sky: Arrives on Earth in the form of a comet.
- Canine Companion: Leo's equivalent to one, although All There in the Manual sources state that Ron's species were actually considered pests by most of L77's inhabitants. In fact, Leo turns him into a dog at the end of the episode.
- Eye Beams: Can shoot lasers from his eyes.
- Magma Man: Ron consumes lava, which was how he turned from a small animal into a gigantic monster.
- Make My Monster Grow: Ron is normally only about the equivalent of a small dog in terms of comparing his size to that of Ultraman Leo, but its grief and rage, as well as a steady diet of magma, made it the size of Ultraman Leo.
- Pet Monstrosity: Of Ultraman Leo before L77 was destroyed.
- Prehensile Tail: Uses his tail to constrict Ultraman Leo during their fight.
- Playing with Fire: Asides from his Breath Weapon, he can also shoot fire from his tail.
- Tunnel King: Ron is a powerful burrower, which helps him feed on lava. In fact, books on the Ultra Series state that on L77, Ron's species are roughly equivalent to moles.
- Woobie, Destroyer of Worlds: Ron was only rampaging because he had been driven to madness by the grief over being separated from Ultraman Leo. Even Gen feels deeply sorry for Ron and refuses to battle him as he rampages.
- First Appearance: One Man Covered in Mud
- Badass Normal: Despite having no powers beyond the stock one of changing his size, Kettle was so strong and agile that Gen had to merely train against the alien's superhuman martial arts skills instead of some special ability he had.
- Kick the Dog: Aliens in this series really like murdering kids' guardians, don't they?
- Spear Carrier: Kettle only wields a spear, though it can also fire laser bullets from its end, and he's really good with using it.
- Super Reflexes: Kettle is capable of numerous acts of inhuman agility, including jumping clean over the heads of his enemies and leaping from wall to wall.
- Super Strength: Kettle is so strong that he can bend iron with his bare hands, and defeat 4 trained MAC officers and a professional wrestler (the latter whom he kills) all fighting him at once.
- First Appearance: The Adventure Nut Arrives!
- Breath Weapon: Breathes powerful gusts of misty wind. They can't hurt people, but they can blow away annoyances as needed.
- Everything's Better with Dinosaurs: Looks the part.
- Improbable Weapon User: In his battle against Ultraman Leo, he uses a tower as a bat and tosses an oil tank as a grenade.
- Non-Malicious Monster: Being the kaiju of the series' first Breather Episode, Bango is merely a harmless (as far as kaiju go) goofball who just wants to have fun and likes to imitate anything he finds amusing.
- First Appearance: Huge Explosion! Two Aliens in Crisis!
- Fragile Speedster: Despite how overwhelming his Super Speed and Invisibility were for Gen, Vibe ended up being killed by only MAC's firepower when he turned giant size, with no help from Ultraman Leo.
- Invisibility: Which he performs by moving his entire body at Super Speed.
- Punny Name: So called for his vibrating abilities, which is what allows him to turn invisible and move at superspeed.
- Super Speed: Vibe can vibrate his entire body at lightning fast speeds, and then move about with an equally great swiftness to make some murderous mayhem.
- First Appearance: Certain Kill-Fists! A Young Boy Calls Up a Tempest!Played by: Kawashiro Famiyoshi (human form actor)
- Beware My Stinger Tail: Being a scorpion kaiju, Antales uses his claw-like stinger tail in combat. In his human form, the tail is invisible allowing him to still use it. It was also the ability Gen had to train against.
- Blinded by the Light: Can flash a blinding red light from his eyes.
- Meaningful Name: Antales' Japanese name "Antares" is derived from the name of a star located in the constellation of Scorpius, where he originates from.
- Off with His Head!: Leo defeat Antales by ripping of his stinger and using it slice off the monster's head.
- Playing with Fire: His stinger tail can also act as a flamethrower.
- Power Pincers: Being a martial artist scorpion monster, he uses them to block his enemies' punches and kicks.
- Scary Scorpions: Japanese books state that he hails from the constellation of Scorpius too!
- Voluntary Shapeshifting: Takes on the form of a young martial artist in order to challenge Gen in face-to-face combat.
- First Appearance: The Way to Fight in Darkness! Attacking with Fighting Spirit!
- Doppelgänger Spin: Creates illusions of himself to battle Ultraman Leo. Gen had to train to figure out how to distinguish the real one. The trick is that the real one is the only one whose footsteps can be heard.
- Evil Laugh: Which is actually a slightly modified form of Alien Baltan's.
- Expy: Of Alien Baltan from the original Ultraman, who has almost the exact same Doppelgänger Spin ability and Evil Laugh.
- First Appearance: The Woman who Disappeared at MidnightPlayed by: Yuri Hoshino (human form actress)
- Foul Flower: Carries the Black Orchid on her chest, which allow her to change shape. It also shoots a ray of energy that turns victims into silver, but in the battle with Ultraman Leo, it only has a minimal effect due to their larger sizes.
- Taken for Granite: Her Black Orchid encases people in silver, turning them into statues or simply welding their legs.
- Voluntary Shapeshifting: Takes on the form of a ghost-like lady in white to lure men and kill them with her Black Orchid.
- First Appearance: Bride of the Wolfman
- Demonic Possession: His method of turning people into "werewolves". If the person has any special traits (eg: Saeko and her gymnastic skills), he gains those in his monstrous form.
- Our Werewolves Are Different: Very different. First of all, he's an alien. Secondly, and more interestingly, he actually turns people into werewolves by possessing them instead of biting them, forcing them to transform into Alien Wolf at night. Also, he has a number of vampire traits, notably drinking blood for sustenance and having a habit of specifically targeting women.
- Spin Attack: Due to the fact that he was possessing the body of Saeko the gymnast, Alien Wolf inherits the girl's spinning acrobatics and uses it to perform a pinwheel attack.
- Spring Jump: Not actually taken from Saeko, but rather a standard ability for Alien Wolf.
- The Tooth Hurts: Ultraman Leo tears out Alien Wolf's fangs during the fight.
- First Appearance: Vampire! The Bat Girl!Voiced by: Tomoko Sakamoto (also human form actor)
- Bat Out of Hell: Her true form is a giant humanoid bat, though she can also appear as a very large spacefaring vampire bat.
- Blade Below the Shoulder: Has retractable wrist blades that she uses in her fight with Leo.
- Blow You Away: Like all winged monsters, she is able to create powerful gusts by flapping her wings. To solve this, Leo simply just rips her wings apart.
- Our Vampires Are Different: In this case, they're giant alien space bats that take on the forms of humans to turn people into vampires.
- Pointy Ears: They can shoot rays of energy.
- Power Crystal: In her human form, Batton carries a gemstone around her neck that puts people to sleep, which she uses so that she can drink their blood.
- Super Spit: Has poison spit.
- Voluntary Shapeshifting: Like Antales, Batton takes on a human in order to spread havoc out of the notice of MAC. She still has all her vampire powers, using her long dress as makeshift wings.
- Would Not Hurt A Child: She doesn't attack children. It's not out of sympathy for them though — she just doesn't like the taste of their blood.
- First Appearance: Revival of the Half-Man Fish
- Fish People: He came to Earth during the 1800s and terrorized the locals of the nearby village for many years, creating a dread superstition amongst them about not fishing at certain times lest they incur the wrath of a "sea monster".
- Grievous Harm with a Body: Ultraman Leo kills Boze by ripping off his whip-arm, and using it to beat the alien to death.
- Stripped to the Bone: Dissolves into a skeleton upon death.
- Whip It Good: His right arm is a whip-like tentacle, which Gen only has a very brief training sequence against.
- First Appearance: The Strange Boy from Ursa MinorPlayed by: Nagisa Koyama
- Beary Friendly: A little boy from the constellation of Ursa Minor and gets along swimmingly with both Dan and Gen. He also has his pair of orphaned bear cubs, who cares for a lot.
- Human Aliens: Appears as one, although it's more likely that we never actually see his true form.
- Meaningful Name: Bock's name comes from "Koro-pok-guru", the name of a race of gnome-like people in the folklore of the Ainu people who inhabit Hokkaido.
- Ursine Aliens: Implied. We never see his true form, but considering Dogyuh, it's likely he resembles one.
- You Killed My Father: In this case, Dogyuh killed his mother. Thus he comes to Earth to ask for help from his friend Ultraseven.
- First Appearance: The Strange Boy from Ursa MinorPlayed by: Kin Ohmae (human form actor)
- A Load of Bull: His true form is a vaguely minotaur-like alien, since he hails from the Taurus constellation.
- An Arm and a Leg: Ultraman Leo kills him by ripping his legs off.
- An Axe to Grind: In human form, he carries around a large hatchet strong enough to cut a tree only in a single slash.
- Archenemy: Of Bock, for killing his mother.
- Eye Scream: Bock impales Dogyuh's eyes with spears during Leo's battle with the bull-like alien.
- Jerkass: He's a bullying brute all around, and even tries to incite some local villagers against Bock by accusing him of being an evil invader.
- Super Strength: Since he is a bull-like alien. He manages to temporarily blind Leo with the sheer strength of a single punch to the face.
- Would Hurt a Child: Duh. His goal was to kill Bock, after all. He also kills one of Bock's pet bear cubs.
Alien Alpha Nike
- First Appearance: I Saw a Goddess in the Far NorthPlayed by: Megumi Maritomo
- Ancient Astronauts: When her species came to ancient Greece, the Greeks gained their inspiration for their goddess of victory.
- Born Lucky: So much that she can bless other people with good luck.
- Human Aliens: Due to the fact that her species is actually the inspiration for the Greek goddess Nike.
- Interspecies Romance: She had fallen in love with Kitayama when he rescued her from Alien Northsatan four years ago, so she granted him the blessing of good luck in gratitude. With her return, they rekindle their romance again.
- First Appearance: I Saw a Goddess in the Far North
- Bounty Hunter: His goal was to kill Nike due to a price that evil aliens had placed on her head.
- Breath Weapon: Northsatan can fire a beam of white smoke containing hundreds of needles.
- Eat Dirt, Cheap: It's stated that his species consumes metals.
- Flechette Storm: His Breath Weapon as stated above. They're even more dangerous to humans when he's kaiju-sized as he successfully cripples Kitayama with a man-sized spike through the leg.
Gallon and Litre
- First Appearance: Leo Brothers vs. Monster Brothers
- Breath Weapon: Both of them breathe fireballs and showers of explosive sparks.
- The Dividual: Like the Gilas Brothers, it's nigh impossible to treat them as separate monsters due to how closely tied with each other they are.
- Punny Name: On the measurement for liquids, with Gallon being the older brother because gallons are the larger measurement.
- Spell My Name with an "S": Gallon has also been spelled as Garon and Galon, while Litre as Liter and Littre.
- Those Two Bad Guys: Fortunately for Leo, Astra showed up to help even the odds against the monster brothers and save the day.
- Tunnel King: Both monsters are capable of burrowing, and coming out of the ground is how they introduce themselves to the world.
- First Appearance: The Mischievous Alien Who Fell From His BedPlayed by: Yasuhiro Masuda (actor), Kazue Takahashi (voice)
- Amusing Alien: Coro is purely a goofy, fun-loving alien who has no ill intentions (as appropriate for a Breather Episode). He causes a lot of trouble through his mischief with Tooru and Kaoru though, not to mention the whole Renbolar fiasco.
- Big Eater: He eats a lot when Tooru and his friends get him several boxes of donuts. However, he gets a stomachache from it.
- Kid with the Leash: Coro controls Renbolar entirely through his tail, so if it gets torn off, Renbolar will rampage. Fortunately, if that happens Coro can regrow his tail, which is sped up by standing on his head.
- Really 700 Years Old: Despite his child-like appearance and personality, he says he's old enough to be a great-grandfather!
- Rubber-Forehead Aliens: The only physical differences between him and a human boy are that Coro has big floppy ears and a tail.
- Trademark Favorite Food: He got hungry upon arriving on Earth, Tooru and his friends got him some donuts, and he enjoyed them so much that he and Renbolar bring some back home.
- First Appearance: The Mischievous Alien Who Fell From His Bed
- Beware the Silly Ones: Despite his goofy personality, Renbolar proved to be an extremely powerful enemy. Thankfully, Coro regrew his tail quickly enough to keep Renbolar from defeating Leo.
- Everything's Better with Rainbows: Can consume rainbows to increase his strength.
- Fighting Clown: Renbolar's battles with Leo are highly comedic, with their first fight playing out quite similarly to a very goofy boxing match.
- Non-Malicious Monster: As another Breather Episode monster, Renbolar is a purely peaceful creature, so long as Coro can keep him under control. But even when it goes berserk, Renbolar is still pretty ineffectual.
- Pet Monstrosity: Of Alien Coro, who controls the monster via his tail.
- Punny Name: Renbolar's Japanese name "Renbora" is derived from the Japanese pronunciation of "rainbow".
- Why Did It Have to Be Snakes?: Renbolar is afraid of water, and when a rainstorm hits Tokyo, the monster runs away.
Alien Sarin Professor Dodole
- First Appearance: The Beautiful Maiden from VirgoPlayed by: Hideo Amamoto
- Gadgeteer Genius: Built numerous robots to serve Sarin society, which tragically backfired when they destroyed his people.
- Human Aliens: Though a flashback implies it's just a disguise.
- Last of His Kind: Thanks to Gamelot and the other robots destroying his homeworld.
Alien Sarin Carolyn
- First Appearance: The Beautiful Maiden from VirgoPlayed by: Mariko Matsuoka
- Heroic Sacrifice:In order to help Leo kill Gamelot, Carolyn self-destructs to blow a hole in Gamelot's armour.
- Human Aliens: Or so it seems...
- Mad Scientist's Beautiful Daughter: Granddaughter technically, but who's keeping track? Dodole can't really be called "mad", but he did build the robots that destroyed his homeworld. Carolyn was also beautiful enough that Gen developed feelings for her.
- Robotic Reveal: Turns out to be an android, and she self-destructs in order to damage Gamelot enough for Leo to kill him.
- First Appearance: The Beautiful Maiden from Virgo
- A.I. Is a Crapshoot: He was the most powerful of the numerous robots that once served the Sarins, built to be their defender. Unfortunately, it backfired when they rebelled and destroyed the planet.
- Archenemy: Of Professor Dodole and Carolyn, fir destroying their homeworld. Additionally, Gamelot was built by the former and sees the latter as a traitor for not participating in the robot rebellion.
- Chest Blaster: Has numerous large red orbs on his chest that fire lasers.
- Humongous Mecha: A giant robot built to protect the Virgo Consetllation from enemies, only to turn against them.
- The Juggernaut: Ultraman Leo had a nigh-impossible time trying to get past Gamelot's metallic armour. It was only Carolyn's self-destruction that allowed Leo to finally bust up the robot into scrap metal.
- Meaningful Name: Gamelot's alternative name Gamerot comes from "kame", the Japanese word for "turtle", which is rather fitting as Gamelot possesses the ability to retract its head and limbs into its super-tough body.
- Spell My Name with an "S": Gamelot or Gamerot?
- Spring Jump: Due to the powerful springs in his legs, he can jump quite high for a robot.
- Transforming Mecha: Can retract his head and limbs inside his body to fly.
- First Appearance: The Rhinoceros Beetle is a Space Invader!Portrayed by: Toru Hanabusa
- Human Aliens: It's implied Alien Clean doesn't actually exist and was just part of Jiro's dream, thus no actual connection to Satan Beetle. However, the episode is kinda confusing on the whole, so it's completely possible there really was an Alien Clean fooling him through dreams and had actually sent Satan Beetle to Earth to destroy humanity.
- First Appearance: The Rhinoceros Beetle is a Space Invader!
- Big Creepy-Crawlies: Is meant to resemble the Japanese rhinoceros beetle, or kabutomushi.
- Breath Weapon: Breathes poison gas.
- Chest Blaster: Satan Beetle is able to fire energy missiles from from the sockets on its chest.
- Four-Legged Insect: Like most insect kaiju, Satan Beetle only has two arms and two legs since that's how People in Rubber Suits work.
- Giant Flyer: Like a real rhinoceros beetle, Satan Beetle's wings are hidden under its carapace.
- Spikes of Doom: Its arms are entirely covered in spines that help out in melee combat.
- First Appearance: Ultraman King vs. the Magician
Alien Pressure became the subject of some minor Memetic Mutation in Japan during the release hype for Mega Monster Battle: Ultra Galaxy Legends when comedian Takashi Okamura performed a parody of Michael Jackson's Thriller with Ultra Series monsters while in a Pressure suit to promote the film on his comedy show Mecha-Mecha Iketeru!. He also makes a cameo in the film dressed as Pressure.
- Evil Laugh: A series of eerie cackles and giggles.
- Evil Sorcerer: He came to Earth for the sole purpose of wreaking havoc with his magic powers, as well as defeating Ultraman Leo.
- Having a Blast: Able to generate a series of explosions by waving his hand.
- Magic Wand: Pressure's weapon of choice. Displayed the following abilities:
- Dishing Out Dirt: Can cause small earthquakes.
- Mind over Matter: His staff is able to lift objects telekinetically.
- Playing with Fire: Can shoot out a stream of fire.
- Shock and Awe: Fires paralyzing lightning.
- Shrink Ray: Can reduce his enemies to minuscule sizes, which he does to Ultraman Leo at the beginning of the episode.
- Smoke Out: Can create red smoke for escaping foes.
- Useless Useful Spell: Can create balloons, and he uses one to trap a shrunken Leo inside.
- Teleport Spam: Which he uses to annoy MAC as they attempt to pursue him.
- Wizards from Outer Space: He's an alien wizard so powerful that Ultraman King had to reveal himself for the first time in order to save the day.
- First Appearance: Mighty Momotaro!
- Breath Weapon: Breathes tear gas.
- Big Eater: he has a huge appetite for fruit and came to Earth with the intention of eating all of the planet's fruit.
- Carry a Big Stick: Wields a kanabou, a type of spiked club popularly wielded by oni in Japanese culture.
- Naked People Are Funny: His kilt gets knocked down during the battle with Ultraman Leo, exposing his butt, much to his embarrassment!
- Oni: He is from an episode inspired by fairy tale of Momotaro the Peach Boy after all!
- Punny Name: On "onion" and "oni", which describes his breath weapon's tear gas power and appearance.
- Trademark Favorite Food: He likes fruit in general, but loves apples the most.
- Transflormation: Ultraman Leo defeats him by transforming him into an apple tree.
- Why Did It Have to Be Snakes?: Oni-On is afraid of chickens.
Alien Paradai/King Paradai
- First Appearance: Return of the Bearded CaptainPlayed by: Saiko Egawa (queen), Nobuhiro Kamiya (child)
- Breath Weapon: King Paradai breathes choking black smoke.
- Fish People: Their episode is inspired by the folktale of Urashima Taro, the boy who visited the bottom of the sea and the palace of Ryujin, the Japanese dragon god of the sea. However, they live in a submarine rather than swimming about in the ocean.
- Fusion Dance: Two Paradai are able to transform themselves into King Paradai by merging together.
- Horn Attack: King Paradai can shoot energy bolts from its horns.
- Mind over Matter: The Paradai have telekinetic powers.
- One-Winged Angel: Some of the human-like Paradai, angry about the attack on their children, transform themselves into the dragon-like King Paradai to destroy a fishing village, despite that fact that MAC, a friendly fisherman, and the Paradai queen had been working to patch up the incident. Ultraman Leo does not take kindly to this.
- Prehensile Tail: King Paradai uses its tail to strangle Ultraman Leo in their fight.
- Rolling Attack: King Paradai is able to curl itself into a ball to deflect attack of its hide while ramming into enemies.
- Rubber-Forehead Aliens: Except for their green skin and hair, the Paradai look exactly like humans.
- First Appearance: Reunion of Fate! Dan and Anne!Played by: Keiji Shimizu (human form actor)
- Bratty Half-Pint: His human disguise, except the kid also has incredible psychic powers.
- Eye Beams: Able to fire a series of telekinetic rings from his visor.
- Karma Houdini: Despite all the trouble he causes, Ultraman Leo ultimately spares Uringa and takes both the alien and the woman away from Earth, leaving it forever a mystery whether the lady really was Anne or an Identical Stranger.
- Mind over Matter: Has immense psychic powers, overwhelming even Dan's Ultra Willpower. In his first appearance, he uses his powers to pin Momoko and a group of children with a steel beam, and he even lifted a Ferris wheel with telekinesis!
- Psychopathic Man Child: Possibly. He takes on the form of an extremely bratty little boy who uses his potent psychic powers to cause mischief and depends heavily on a maybe-Anne who may or may not be his real mother.
- Shock and Awe: Can fire green lightning from the horns on his helmet.
- Spike Shooter: Can fire the spikes from his armour as missiles, or even use them as daggers in melee combat.
- First Appearance: The Monster's FavourPlayed by: Hiroko Sakurai (human form actress)
- Bird People: She's an intelligent bird-like alien described as the most beautiful being in the universe. It's also worth noting she was inspired by a classic Japanese fairy tale Tsuru no Ongaeshi (usually called The Grateful Crane in English).
- Friend to All Children: She shows signs of this, as she presents children with toy pinwheel fans she made
- Informed Attribute: Admittedly, her true form is not as beautiful as the show says, but that's what happens when you recycle the costume from Alien Northsatan mixed with Alien Wolf.
- Voluntary Shapeshifting: Like the fairy tale character she's based on, she takes the form of a beautiful young woman (who is no less than Akiko Fuji!) to live with the man who helped her get rid of a spear stuck in her foot from when Alien Magma had attacked her.
- First Appearance: The White Flower that Protects EarthVoiced by: Nobotu Nakaya (also human form actor)
- Archenemy: Of the enigmatic White Flower Fairy.
- Faux Affably Evil: He presents himself as a kindly old man, even when his plot is uncovered, proudly stating that his flowers will beautify Tokyo and give the hard-studying children of Japan some much needed rest.
- Foul Flower: Virmin's flowers may seem like dainty little beauties, but he uses them to spray children with a sleep-inducing poison.
- Green Thumb: He can create poisonous flowers that put humans to sleep. Additionally, his antennae can fire a laser that creates entangling vines around his enemies, as well as fire a mist from his hands that makes his poisonous flowers grow on whatever they hit.
- Insectoid Aliens: Sorta looks like a giant cockroach.
- Punny Name: On "vermin", since he's an insect-like alien.
- Spell My Name with an "S": Virmin or Vermin? It all depends on ow literally you translate his name.
- First Appearance: Farewell, Princess Kaguya!Voiced by: Takeshi Watabe
- Breath Weapon: Breathes a shower of explosive sparks.
- Chest Blaster: The bright pattern on his underside can fire out a beam of energy that can create blinding flashes of light, cause a small earthquake, or even give Kaguya her true princess outfit.
- Non-Malicious Monster: Kirara's goal was to pick up Princess Kaguya, who had been left on Earth as a baby by the people of the Moon to hide her from enemies. However, Kaguya isn't aware of this and refuses to leave the old couple who have taken care of her for the past 15 years. Ultraman Leo agrees likewise.
- Rolling Attack: Kirara can roll himself up into a meteor, which he uses to smash into enemies, as well as fly between Earth and the Moon.
- First Appearance: Leo Brothers vs. the Space DemonVoiced by: Eiji Maruyama
- Breakout Villain: Not to the extent of Alien Magma and Alien Babalou, or Nova, but Akumania has proven to be decently popular enough to earn some reappearances.
- Casting a Shadow: Can cloak a targeted area in darkness.
- Cephalothorax: His eye and mouth are located on his chest and belly.
- Cyclops: Has a single eye.
- Eye Beams: In eyeball form, he can fire energy blasts, as well as a ray of energy that causes spectral hands to appear out of the ground and grab victims.
- Eye Scream: Gets his eye punctured during his battle against Leo and Astra when they toss one of his horns into it.
- Faceless Eye: Can transform himself into one for flight.
- Mind over Matter: Has telekinetic powers. In fact, when Leo tears off his arms in the fight, Akumania uses his telekinesis to guide his severed arms to strangle Leo and reattach them to his body.
- Our Demons Are Different: His name is derived from the Japanese word for "demon" and he also has several demonic powers, but really he's just an extraterrestrial.
- Starfish Aliens: Easily one of the weirdest alien designs in this series.
- First Appearance: Ultra Brothers, Eternal Vows
- Breath Weapon: Breathes fire from both faces.
- Eye Beams: Fires bolts of energy from both of his faces, but can also shoot out a beam that encases its victim's mouth in a near-indestructible iron mask, which he used to prevent Goh from being able to say anything to Dan and Gen.
- Meaningful Name: Ashuran's name is derived from "Asura", a class of demons in Indian mythology that are sometimes portrayed with multiple faces.
- Oni: Although he's mainly based on the Indian Asuras, Ashuran also takes heavy inspiration from Oni as evidenced by his red-and-blue design.
- Two-Faced: One side of Ashuran is red and the other is blue, but otherwise they're totally identical.
- First Appearance: Ultra Brothers, Eternal Vows
- Awesome, but Impractical: Although Sevengar managed to pummel Ashuran with ease when released, his 50 hour recharge time and one minute time limit meant he ultimately did very little against the demon-like kaiju. This is the likely reason why he's never used again afterwards.
- Hand Blast: Fires missiles from his fingertips.
- Hour of Power: Unlike Seven's Capsule Monsters (but similar to the Maquette Monsters of Ultraman Mebius), Sevengar can only last for one minute before returning to his capsule. Afterwards, the capsule cannot be used for the next 50 hours as he recharges.
- Humongous Mecha: A giant robot that the Ultras had specifically created for usage as a Capsule Monster.
- Mons: He's a Capsule Monster like Miclas, Windam, and Agira, and even has a "Monster Ball" (beating Pokemon by about 20 years!).
- Sealed Good in a Can: He's stored inside in a football-shaped object called a Monster Ball, which looks very different from the capsules used by Dan in Ultraseven.
- Super Strength: Which is what makes Sevengar is the most powerful of all the Capsule Monsters, allowing him to overpower Ashuran with no problems.
- Tin-Can Robot: Sevengar has a very canister-shaped body.
- First Appearance: I'm the Monster GeneralVoiced by: Fuyumi Shiraishi
- Amusing Alien: He's another Breather Episode monster, so this is a given. The worst he really does is destroy an empty school building when he turns giant-sized, but the kids don't seem to mind.
- Attack Reflector: The warts on his body are able to reflect projectile attacks.
- Bilingual Bonus: His name means "'General" in Japanese, which reflects his friendship with a kid nicknamed "the Monster General". Taishoh's the literal monster general.
- Bratty Half-Pint: The reason why his parents have sealed him inside a magical pot was due to his extremely bad behaviour and performance at school. When he arrives on Earth, he causes just as much havoc for the kids and MAC.
- Cool and Unusual Punishment: Taishoh was placed inside a magical pot and thrown into space for how much of a brat he was, but Miyasaka released him when he arrived on Earth. Ultraman Leo seals him back up again for all the trouble he causes.
- Fighting Clown: His battle with Ultraman Leo is very much a slapstick-type fight, befitting of Taishoh's mischievous behaviour.
- Potty Failure: Suffers from this when Miyasaka brings him inside the jar to school, only for taishoh to have to really use the bathroom. It turns out the jar has a leak too, much to Miyasaka's embarrassment!
- First Appearance: Fly, Leo Brothers! Save the Space Base!Played by: Tetsuo Nogawa (human form actor)
- Badass Normal: Despite not really having any unique combat powers beyond the usual size-increasing one, he gave Ultraman Leo a tough enough time that Astra had to show up and help him out.
- Bitch in Sheep's Clothing: Gen and Dan know all too well that Uchida is in fact Alien Atlanta coming to Earth with murderous intentions, but because Uchida is highly regarded by the rest of MAC and is supposed to marry the daughter of MAC's top leader, they can do pretty much nothing to stop him.
- Dead Person Impersonation: Takes on the form of Uchida, whom he killed, in order to join MAC and destroy them.
- First Appearance: Mystery! The Devil in the Mirror!Voiced by: Chisako Hara (also human form actress)
- Blade on a Stick: Her weapon of choice is a yari, a weapon historically used by samurai that resembles a sword mixed with a spear.
- Dead Person Impersonation: Takes on the form of Tooru and Kaoru's mother to capture Kaoru. Kaoru sees through the disguise when she sees her brother being harmed by Specter's rampage and realizes her mother would have also tried to save Tooru in such a situation.
- Master of Illusion: Asides from taking the form of Tooru and Kaoru's dead mother, she also creates various hallucinations to confuse Ultraman Leo in their fight.
- Mirror Monster: Unlike most seijins, Mazaras isn't the name of her homeworld. She lives in the mirror realm instead.
- Oni: Essentially an Oni mixed with Bloody Mary, in terms of appearance and behaviour.
- Tragic Villain: Mazaras kidnapped Kaoru to replace her deceased daughter, so even Ultraman Leo felt bad for her when they fought.
- First Appearance: Mystery! The Devil in the Mirror!
- Attack Reflector: Its mirror-like body can reflect weak attacks, such as the gunfire from MAC.
- The Dragon: Of Alien Mazaras.
- Literally Shattered Lives: Specter shatters into hundreds of mirror shards when Ultraman Leo kills it.
- Mirror Monster: Not only does Specter hail from the same realm as its master Mazaras, but it is also completely made out of mirrors!
- Poisonous Person: Is able to shoot toxic gas from its hands.
- Power Crystal: Specter has several on its head that are able to shoot out weak energy beams.
- First Appearance: Battle! Leo Brothers vs. Ultra Brothers!Voiced by: Motomu Kiyokawa
Among Ultraman Leo's most iconic and dangerous enemies, Alien Babalou has reappeared many times in other entries of the Ultra Series, where he remains a cunning and powerful foe who continues to use his shapeshifting abilities to sow havoc and distrust among humans and Ultras alike.
- Arm Cannon: His left arm's bracer is equipped with a small one capable of launching small purple lasers.
- Blade Below the Shoulder: He possesses a small switchblade on his right arm's bracer.
- Blade on a Stick: His favored weapon is a polearm with a spiked mace on the end called a Ji.
- Breakout Villain: Babalou is probably the most frequently reappearing, as well as the most popular, of Ultraman Leo's enemies, not surprising given his manipulative nature and formidable combat abilities.
- Evil Knockoff: His main combat specialty and the general role in many of his appearances is to transform himself into an evil version of an Ultraman, such as Astra or Ultraman Hikari, in order to sow distrust between human and Ultras, or Ultras and each other.
- Grappling-Hook Gun: Comes with the arm cannon on his left bracer, serving to ensnare foes.
- Horned Humanoid: The two pointy horns sticking from his hair. According to one manga, they're the source of his shapeshifting powers.
- Jerkass: Babalou is cruel, aggressive, arrogant, and manipulative. He delights in the distrust and prejudice he creates in his disguises, even going as far as to use Leo's feelings for his brother to deceive him into battling the Ultra Brothers.
- Manipulative Bastard: In his debut series, he uses the disguise of Astra to trick Ultraman Leo into battling the Ultra Brothers and assists him in the process. If it wasn't for a timely reveal by Ultraman King, the Earth and the Land of Light would have both been destroyed.
- Shapeshifter: Like Alien Zarab of the original Ultraman fame, he specializes in doing this. However, he's no wimp in combat once the heroes catch on to his disguise.
- Spell My Name with an "S": Babalou or Babarue?
- First Appearance: MAC Annihilated! The Flying Saucer is a Living Creature!Played by: Takeshi Obayashi
- Beard of Evil: Sports a very villainous-looking goatee.
- The Beastmaster: He's the commander of the Flying Saucer Beasts.
- Big Bad: Becomes this with his arrival as the series didn't really have one previously.
- Crystal Ball: He carries one that is used to call forth the Flying Saucer Beasts from the Black Star.
- Establishing Character Moment: His debut has him wipe all of MAC out and kill an entire shopping mall full of people with Silver Bloom...while calmly walking through the panicked civilians before giving a Slasher Smile.
- Evil Is Hammy: While we don't hear him speak very much early on, his habit dramatically announcing the names of the next Flying Saucer Beast would certainly qualify him for it.
- Evil Wears Black: From the hat to the cape to the tip of his boots.
- Genre Savvy: Whereas most Ultra Series aliens will see humans as too puny to be of any threat to them and end up defeated because of that assumption, Commander Black knows that a defense team can legitimately be a threat and takes MAC down before they can even know of his invasion plans.
- Hero Killer: Kills all of MAC in his first appearance. He later temporarily kills Leo by hacking him to pieces.
- Human Aliens: When his face is finally revealed, he looks very much like a human.
- I'm Melting!: Dissolves into foam after being killed by Tooru and his friends.
- Karmic Death: Repeatedly endangers the children Leo has befriended and uses one as a hostage for the Final Battle. Those kids proceed to beat him to death.
- Knight of Cerebus: The series was already dark, this guy took it to a whole other level. To point: before his debut is over, he's already gotten a double digit body count.
- Orcus on His Throne: Normally just commands his monsters from a distance and doesn't fight Leo himself. Justified, as while capable of jumping far distances, he's ultimately overwhelmed by children, so he wouldn't be much of a match for Leo. Subverted in the manga adaptation, where he grows giant to fight Leo himself.
- Sadist: It's quite clear Black really enjoys what he's doing while murdering hundreds of people and slicing Leo to pieces.
- Slasher Smile: Flashes many, both subtle and completely psychotic.
- The Villain Knows Where You Live: He's aware of Leo's Secret Identity and makes very good use of that fact.
- Would Hurt a Child: Repeatedly has his monsters target Leo's young friends to get at him. In Leo's battle with Black End during the finale, he threatens to kill Tooru in an attempt to demoralize the hero and let his monster win. It almost works.
- First Appearance: MAC Annihilated! The Flying Saucer is a Living Creature!
- Big Eater: Eats the MAC space station!.
- Combat Tentacles: Relies on these in battle, as well as to wrap around anything it desires to consume.
- Flying Seafood Special: A gigantic jellyfish.
- Knight of Cerebus: As the very first of the Flying Saucer Beasts, Silver Bloome shows how dark things are getting by killing all of MAC (except Gen), Momoko, Kaoru, and Takeshi within the first 6 minutes of the episode.
- Poisonous Person: Silver Bloome can spew a highly flammable, toxic liquid from its mouth. However, rainwater seems to dilute this, as Leo's Battle in the Rain with the monster sees him and some kids get splashed by the stuff with no effect.
- Sizeshifter: Makes itself tiny, which it does to hide from Ultraman Leo for most of the episode.
- Swallowed Whole: Silve Bloome can consume nearly anything completely, increasing the size of its mouth as appropriate.
- Voluntary Shapeshifting: Can transform itself into a rock shaped like a flying saucer. Tooru and his friends discover it and bring it to class, where Silver Bloome shifts into its small form and attacks their teacher later on.
- First Appearance: The Flying Saucer Beast From an Evil Planet is Here!
- Flying Seafood Special: A crab.
- Giant Enemy Crab: Based on horseshoe crabs and fiddler crabs to be exact.
- Hollywood Acid: Its primary ability is to spit acid foam capable of turning apartments into mush within minutes.
- Right Hand of Doom: Like a fiddler crab, Black Dome's left pincer is far larger and stronger than its right one.
- Sizeshifter: It makes itself tiny to hide for most of the episode.
- Super Spit: Black Dome's acid foam comes from its mouth in imitation of the foaming that real crabs do to help with breathing on land.
- First Appearance: Leo is in Danger! The Assassin is a Flying Saucer Beast!
- Combat Tentacles: They are mainly used to fire energy blasts or shoot fire instead.
- Flying Seafood Special: Another gigantic jellyfish, just like Silver Bloome.
- Manipulative Bastard: Takes advantage of a boy's love for animals to be sheltered in a small shed when not rampaging.
- Meaningful Name: Absorba absorbs oil to gain its fire powers.
- Playing with Fire: Can use the suction cups at the tips of its tentacles to act like flamethrowers.
- Shock and Awe: Absorba can fire a beam of electrical energy from the top of its body.
- Sizeshifter: Takes on a small form when hiding.
- Ungrateful Bastard: Attempts to kill the kid taking care of it, burning down his shed and killing a few of his animals in the process too!
- First Appearance: Challenge! Terror of the Vampiric Saucer!
- Asteroids Monster: Deemos can split into tiny versions of itself to drink human blood. Additionally, when Deemos is blown into pieces, its various bits simply take a life of their own.
- Combat Tentacles: Equipped with 7 of these.
- Flying Seafood Special: An enormous brittle star.
- Hollywood Acid: Spits acid from its midsection that is able to dissolve a human in seconds.
- Our Vampires Are Different: Another Ultra monster with vampire-like traits, but it feeds on blood by splitting into lots of hard-to-see small forms that attack humans by hiding in unexpected places.
- Spell My Name with an "S": Deemos or Demos?
- First Appearance: The Shooting Star from Hell
- Hand Blast: Black Garon is able to fire a shower of explosive sparks from the ends of its arms.
- Mix-and-Match Critters: Black Garon had toad features mixed with turtle qualities.
- Overly Long Tongue: Works as a rope or a whip to smash structures or entangle Ultraman Leo for combat.
- Turtle Power: Black Garon's primary motif is that of a turtle, although its saucer form more closely resembles a toad.
- Voluntary Shapeshifting: Disguises itself as a lumpy meteorite for most of the episode, hiding in a science laboratory.
- First Appearance: The Phantom Girl
- An Ice Person: Both in human and monster form, Blizzard can spray freezing gas.
- Chest Blaster: Blizzard's fire and ice attacks are emitted from an orb-shaped structure on its stomach.
- Creepy Child: Its human disguise, Mayuko, a mute little girl who wanders around carrying her Creepy Doll.
- Creepy Doll: Mayuko carries one that breathes freezing gas.
- Playing with Fire: Blizzard can also shoot out fire.
- Two-Faced: Much like Ashuran from earlier, Blizzard's has a face on the front and another on the back. The front has a blue outline and manipulates ice, while the back is red and control fire.
- Voluntary Shapeshifting: Takes on the form of a little girl named Mayuko for most of the episode.
- First Appearance: The Fighting Leo Brothers! End of the Flying Saucer Beast!
- Alluring Anglerfish: Hangler's lure is disguised as a mysteriously misplaced traffic light, leading unsuspecting drivers into its cavernous mouth.
- Big Eater: Devours an entire highway of cars trapped in a traffic jam in one scene.
- Breath Weapon: Breathes fire.
- Eat Me: Astra helps Leo defeat Hangler by flying inside the monster's mouth and somehow causing it to explode from within.
- Flying Seafood Special: Since it's a Flying Saucer Beast, although based on a fish instead of an invertebrate.
- Punny Name: Hangler's Japanese name "Hungura" is a combination of the Japanese pronunciations of "hungry" and "angler".
- Spell My Name with an "S": Also spelled as Hungler and Hanglar.
- Tunnel King: A capable burrower, sticking out only its maw and lure from the earth to create the illusion of a tunnel at night.
- Vacuum Mouth: Hangler's preferred tactic of consuming vehicles is simply sucking them up through its mouth.
- First Appearance: The Girl Who Collected the Stardust of Demons
- Achilles' Heel: Being a clam, Black Terrina has a soft body underneath the shell. When Leo manages to get a hold of it, his beatings result in serious injury for Black Terrina.
- Breath Weapon: Spits an explosive shower of sparks from within its shell.
- Combat Tentacles: Has about six tentacles growing from the inside of its shell, with four of them ending in claws.
- Eye Scream: Black Terrina's minions jump at people's eyes, clamping into them and causing horrible bleeding. Even Gen was pretty hurt when one managed to get him.
- Flying Seafood Special: A clam-based kaiju.
- The Juggernaut: As a clam-based monster, Black Terrina's shell rendered completely immune to Ultraman Leo's Finishing Moves. But once he gets a hold on Terrina's insides, the tables are turned.
- Mind Control: The tiny Terrinas do this to victims they attack.
- Mook Maker: Conjures tiny versions of itself that resemble very pretty but perfectly ordinary seashells until they attack. Unfortunately, one little girl thought they were beautiful enough to be given to everyone in Tokyo...
- First Appearance: The Giant Saucer Bird Attacks Tokyo
- Beak Attack: Asides from its little minions attacking civilians on the streets, Satan Moa uses its beak like a giant woodpecker on a skyscraper full of screaming people to cause mass panic.
- Blinded by the Light: Satan Moa can make powerful flashes of light from its shoulder to blind enemies.
- Breath Weapon: Able to spit out organic missiles from its beak.
- Eye Beams: Can fire a pair of highly accurate lasers from its eyes capable of shooting down planes.
- Giant Flyer: As the only bird-based Flying Saucer Beast, which is rather strange as its named after a type of flightless bird (although its motif is meant to be a woodpecker).
- Mook Maker: Creates tiny versions of itself that fly out of its chest to peck civilians in an assault that would make Alfred Hitchcock proud.
- Spell My Name with an "S": Sometimes called Satan Mora.
- First Appearance: The Red Assassin That Beckons Death!
Noted as one of the most bizarre kaiju ever made for the Ultra Series, Nova has made several other appearances in the franchise. Nova is one of the very few Ultraman Leo kaiju (rather than seijin) that the producers have ever brought back with notable reappearances including Ultraman Mebius and Ultraman Orb.
- Beware the Silly Ones: Yes, it looks silly, but Nova is a very dangerous monster and among the most powerful Flying Saucer Beasts.
- Breakout Villain: Along with Alien Magma and Alien Babalou, Nova is considered one of the "mascot monsters" of Ultraman Leo. Its sheer weirdness probably helps with the memorability.
- Breath Weapon: Asides from the insanity gas, Nova can shoot fireballs from its mouth. These fireballs split into smaller ones upon impact to generate a series of explosions.
- Combat Tentacles / Whip It Good: Nova's right hand is a cluster of whip-like tentacles that are able to stretch out to impressive lengths.
- Eye Beams: Able to fire a pair of blue lasers from its eyes.
- Hate Plague: Nova's signature ability is its deadly "Red Crazy Gas", that cause humans to turn violently insane. Against Ultras it functions more as a smokescreen.
- Mind Control: What it does Tooru, by latching itself onto his shoulder, causing him to see illusions of his deceased family beckoning him.
- Our Monsters Are Weird: Giant, red Teru Teru Bozu that breathes insanity gas and turns into a flying saucer...You gotta wonder where the monster designers come up with these ideas sometimes.
- Red Is Violent: Asides from being a very dangerous kaiju, there's also the red insanity gas.
- Sinister Scythe: Nova's left hand is a giant sickle.
- Sizeshifter: Can turn itself into a smaller form that can be mistake for a Teru Teru Bozu. The illusion goes away once the little guy starts spraying insanity gas at people though.
- Spin Attack: Nova transforms into flying saucer mode by spinning its body about into a disc-like shape. In flying saucer form, Nova is able to slam into foes at high speeds.
- Teru Teru Bozu: Nova's inspiration. Goes to show you can make anything into a kaiju.
- First Appearance: Leo's Life! The King's Miracle!Voiced by: Keizo Kanie (also human form actor)
- Ax-Crazy: Made most clear when he kidnaps Ms. Miyama while cackling manically, warning Gen and Tooru not to call the police or he'll kill her. The there's when he and Commander Black hack Ultraman Leo to pieces with a saw.
- Beware the Silly Ones: Bunyo proved to be one of Ultraman Leo's most formidable enemies despite his silly behavior and design. Even Commander Black was impressed.
- Breath Weapon: Asides from his slime, he also spits showers of explosive sparks.
- Faux Affably Evil: Sure, Bunyo acts friendly and silly, but if you don't watch your back, you're probably not going to live much longer.
- Hero Killer: He and Commander Black manage to capture Gen and chop Ultraman Leo into pieces! Fortunately, Ultraman King showed up at the last minute to save Leo.
- I'm Melting!: He dissolves into a puddle of slime upon death.
- Little Green Men: His normal form, complete with antennae.
- Off with His Head!: Ultraman Leo defeats him by kicking his head off his shoulders with a well-placed Leo Kick.
- Overly Long Tongue: Used to try strangle Leo.
- Psycho for Hire: Commander Black brought him in to kill Ultraman Leo after Black End was all he had left.
- Super Spit: Spits nasty green slime in combat that even Leo can slip over. He also excretes a similar substance from his body for protection.
- First Appearance: Goodbye, Leo! Journey to the Sun!
- Armless Biped: Presumably, Black End's tail serves as balance.
- Beware My Stinger Tail: Its tail has a pincer that can be used to grab foes.
- Breath Weapon: A stream of fire.
- Cephalothorax: Black Head is pretty much a little head on a big body with legs and a tail.
- Impaled with Extreme Prejudice: Leo kills Black End tearing off two of its spikes and stuffing them into the monster's mouth before finishing it off.
- Names to Run Away from Really Fast: The name also signifies how it is the final monster in the show, as well as for the next five years (in-universe and in real-time).
- Our Dragons Are Different: Black End is designed to be something akin to a dragon.
- Spikes of Doom: Black End has a number of these that can pop out of the black spots on its body whenever needed. They're also able to rotate.
- Tunnel King: Commander Black gets the monster to hide underground while waiting for Ultraman Leo to come out and face the monster.